It might seems like a time consuming step right now but will certainly help thwart illegitimate use of your service in the long run. It sort of depends on the s

It might seems like a time consuming step right now but will certainly help thwart illegitimate use of your service in the long run. It sort of depends on the service you provide. If it is something like signup and get discount coupons in email then I guess its ok. In most cases, IMHO, it will be better in the long run. Will save you in many ways: 1. Have verified users therefore less hacking your system through TOS type loopholes. 2. Your email server will bounce lesser number of emails therefore faster email delivery and reduced costs. 3. Once your service gathers customers, it will give them a sense of security.